Tweet
Re: Let The Fun Begin
Well, the rule of thumb is to pick the smallest turbo that can possibly meet your goals, so as to have the earliers spool, most room under the torque curve, most streetability. Obviously if you want more room to "grow" you can get a larger turbo, but that will mean more turbo lag all the time. Turbos like the T3/T4 or GT28RS are made to flow more air than what you need at the minimum (more like the 250-300hp range) and so also need more force to get going.
If I wanted to start small and grow later, I would just replace the turbo later with a bigger one.
Anyway, the GT BB turbos are good but not better in all respects - can't be rebuilt and so basically have a limited life. They are also more expensive. The ball bearing design actually makes more of a difference as the turbo gets bigger (more friction) so for smaller turbos it also makes less sense from a dollar-to-bennefit standpoint. But if you don't mind spending the dough, they are technically the best turbos for any application.
If you compare the results of a lot of GT28RS (dual ball bearing) users to Super 60 users (journal bearing) in the 1.8T forums you'll see that the GT28RS guys don't necessarilly get faster spool up OR higher hp, and they paid a lot more.
Its a tough choice for sure.
Well, the rule of thumb is to pick the smallest turbo that can possibly meet your goals, so as to have the earliers spool, most room under the torque curve, most streetability. Obviously if you want more room to "grow" you can get a larger turbo, but that will mean more turbo lag all the time. Turbos like the T3/T4 or GT28RS are made to flow more air than what you need at the minimum (more like the 250-300hp range) and so also need more force to get going.
If I wanted to start small and grow later, I would just replace the turbo later with a bigger one.
Anyway, the GT BB turbos are good but not better in all respects - can't be rebuilt and so basically have a limited life. They are also more expensive. The ball bearing design actually makes more of a difference as the turbo gets bigger (more friction) so for smaller turbos it also makes less sense from a dollar-to-bennefit standpoint. But if you don't mind spending the dough, they are technically the best turbos for any application.
If you compare the results of a lot of GT28RS (dual ball bearing) users to Super 60 users (journal bearing) in the 1.8T forums you'll see that the GT28RS guys don't necessarilly get faster spool up OR higher hp, and they paid a lot more.
Its a tough choice for sure.
Comment